Along each row of the periodic table,

Along each row of the periodic table, the atomic mass increases from left to right.

Explanation:

The elements in the periodic table are arranged based on rows and periods by increasing atomic number.

The periodic table has rows from left to right and columns from up and down. These rows are called periods and columns are called groups.

The electron organization in an atom explains about the shape and the elements in the same column have similar chemistry. The elements in each column have the same valence shell electron configuration and they have similar properties.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.